Welcome to Science Buddies! Your idea for a science fair project on a controversial topic is very original and could be an excellent project. However, you have some work to do to identify a controlled experiment to do that would answer your research question.
It would be difficult to analyze levels of bovine somatotropin/bovine growth hormone rBST/BGH because levels would be in the picogram per milliter range, so would require expensive equipment and reagents. The insulin growth factor-1 (IGF-1) that is stimulated by rBST and identical to human IGF-1 is also present in similar levels. Do you have access to a lab that has analytical equipment?
Have you done any background reading to identify a possible difference in composition of milk that you could measure? The Wikipedia article on this subject, which appears to be a good reference with lots of literature citations, states that there an insignificant difference in the fat, protein, and lactose content of rBST-treated and regular milk.http://en.wikipedia.org/wiki/Bovine_somatotropin
However, there was a court ruling in 2010 that said there was a compositional difference between treated and untreated milk, which may “make the milk turn sour more quickly.” So one possible experiment would be to compare the time that it takes rBST-treated and untreated milk to spoil. Check out the information on microbiology techniques from the Science Buddies website if you think you are interested in doing this project. You would still need to develop your research question and design the experiment. http://www.sciencebuddies.org/science-f ... ques.shtml
I noticed that your project is due on September 28. Is this the final due date? If so, then you might consider doing a survey on this subject and analyze people’s opinions on this subject. Here is information for doing a survey project:http://www.sciencebuddies.org/science-f ... rvey.shtml
You would need to work quickly to get this project done.
I recommend that you do additional searching on the internet and look for any reports of compositional differences between treated and untreated milk that you could measure with an experiment of your own.
Let me know what you decide to do, and I’ll provide additional suggestions for the project.